HMC482ST89TR

Overview

The HMC482ST89TR is a SiGe HBT gain block MMIC amplifier from Analog Devices Inc., designed for surface-mount applications. It operates over a frequency range of DC to 5 GHz with a typical gain of 19 dB and a noise figure of 4 dB. The device requires an 8 V supply voltage and draws 110 mA of current. Key performance metrics include a P1dB compression point of 22.5 dBm, an OIP3 of 36 dBm, and an input return loss of 15 dB. It is housed in a compact SOT-89-3 package and supports a power dissipation of 940 mW within an operating temperature range of -40°C to +85°C.

Feature Summary

• Utilizes Silicon Germanium (SiGe) HBT technology for high-performance RF amplification.
• Provides stable gain across a wide DC to 5 GHz bandwidth.
• Features low noise figure suitable for sensitive receiver front-ends.
• Designed for easy integration into cascaded RF/IF gain stages.

Applications

• Wireless communication systems requiring broadband amplification
• RF and IF signal chain gain blocks
• Test and measurement instrumentation equipment

Procurement Notes

Verify component authenticity through authorized channels due to potential counterfeit risks. Confirm that the specific suffix TR indicates tape-and-reel packaging if required for automated assembly. Check for end-of-life status or obsolescence notices from Analog Devices, as availability may be restricted. Ensure thermal management aligns with the specified 940 mW power dissipation limit in the final design.

Selection Notes

Select this component when a broad DC-to-5 GHz bandwidth is required with moderate gain and low noise characteristics. The SOT-89 package offers a compact footprint for space-constrained designs. Consider the 8V supply requirement and 110mA current draw for power budget calculations. Compare against other HMC series amplifiers if higher gain or different frequency ranges are needed.

Part Context

The HMC482 belongs to Analog Devices' HMC series of monolithic microwave integrated circuits (MMICs). These components are engineered for high reliability and consistent performance in RF applications. The ST89 variant specifically denotes the SOT-89 surface-mount package configuration, facilitating automated placement and reduced board space usage compared to leaded packages.

Replacement Considerations

Direct pin-compatible replacements within the same package and electrical specifications should be prioritized. Verify that any substitute maintains the DC-5 GHz frequency range and similar gain/noise figures. Cross-reference with Analog Devices' official replacement guides for obsolete parts to ensure functional equivalence in RF signal chains.

FAQ

What is the maximum operating frequency of the HMC482ST89TR?

The device is rated for operation up to 5 GHz.

Does the HMC482ST89TR require external matching networks?

The datasheet specifies internal matching; however, optimal performance in a system may still benefit from careful PCB layout and impedance matching considerations.